[Xastir-dev] Re: Breaking up shapefiles Re: [Xastir] ESRI shapefiles and dbfawk

[Tom Russo]

On Fri, Dec 17, 2004 at 10:58:26AM -0800, we recorded a bogon-computron collision of the <owen at delong.com> flavor, containing:
> >There are some tunable parameters in the RTree library that I was able to
> >tweak to make the tree fatter and shallower, so each node is a bit more
> >of a memory hog, but the tree in toto winds up taking less memory --- but
> >the 74MB  I mentioned above was after tweaking significantly (it had been
> >over 100M).
> >
> Can you send me a detailed description of the RTREE node structure?  I
> might be able to help you port this to mmap or dbm with some research and
> some additional knowledge.

The only thing I know about it is what I've inferred from code and the 
web site wher I got it.  www.superluminal.com (it's a .com site, but the 
code is public domain "use it for any purpose you want").

I'd love to see how it can be tweaked to use mmap.

-- 
Tom Russo    KM5VY     SAR502  DM64ux         http://www.swcp.com/~russo/
Tijeras, NM  QRPL#1592 K2#398  SOC#236 AHTB#1 http://www.qsl.net/~km5vy/
 "When life gives you lemons, find someone with a paper cut."